<!DOCTYPE html>
<title>CSS Typed OM: Don't crash when calling get() with unrepresentable shorthand</title>
<link rel="help" href="https://crbug.com/364443014">
<style>
  div {
    border: 1px solid black;
    border-left: 42px dashed red;
  }
</style>
<p>PASS if no crash.</p>
<div id=div>div</div>
<script>
  div.computedStyleMap().get('border');
</script>
